Lego Space "Midi Small" sets from the 80s and 90s.

These "small" sets were slightly larger than the "Small" and "Mini-Small" sets of my previous lists. The boxes for these sets were almost double the length of the small sets. The sets numbered in the 684x range and expanded to the 685x range in the 1990s with boxes that were more squarish.

(1985) This set is the second set this year in the series. It was not readily available, and from the looks of it is probably a US only set. It has the standard red minifig for the series, but departs from the jet-rover sequence for the series.

(1987) This is the last Classic Space set in the series, and it continues the jet - rover alternation. A yellow Classic Space minifig helms the vehicle in the year that the Futuron minifigs were introduced.

(1988) Notice that this is the second set to bear this set number, and this set was available worldwide. This set breaks the sequence of alternating between ground and air vehicles by introducing a Mecha. Note that this is also a Futuron set.

(1996) There were no Ice Planet or Spyrius or Unitron sets in this size, bu tthere was a number that was skipped. One has to wonder if it was an Ice Planet or Spyrius set that was unproduced. Exploriens was the next sub-theme to introduce a set in this size.

Note that there's also 6856 in the Exploriens theme, but that's for the next size up. UFO and Insectoids did not have a set in this size. The numbers 6855, 6857, 6858 and 6859 were not used.